The symposium on 'Solar Gamma-, X- and EUV Radiation' was held at Buenos Aires, Argentina, from 11 June to 14 June 1974. It was sponsored jointly by the Inter national Astronomical Union (IAU) and the Committee on Space Research (COSPAR). The Organization Committee responsible for the program consisted of Drs K. A. Anderson (Chairman), J. L. Culhane, G. Elwert, B. B. Fossi, S. L. Mandel s'tam, W. M. Neupert, V. K. Prokofiev, and J. Sahade and representatives of COSPAR, Drs H. Friedman and Z. Svestka. During the symposium Dr Svestka kindly represented the chairman of the Organizing Committee who was unable to attend the symposium. The local arrangements in Buenos Aires were made by Drs J. Sahade (Chairman), H. S. Ghielmetti, M. J. Gulich, H. Molnar, J. J. Tasso and N. Martinez Riva de Tropper. This symposium brought together the observational and theoretical aspects of the Solar Gamma-, X-, and EUV Radiation and other related solar emissions such as radio and energetic particles. There were three specific topics for the symposium, viz.

Klappentext

Proceedings of IAU Symposium No. 68 held in Buenos Aires, Argentina, 11-14 June 1974, organized by the IAU in co-operation with COSPAR

Inhalt
1: General Solar Activity, Coronal Holes and Bright Points.- EUV Observations of the Active Sun from the Harvard Experiment on ATM.- Holes in the Solar Corona.- Time Variations of Solar X-ray Bright Points.- Solar Activity Observed in X-Rays and the EUV from OSO 7.- 2: Active Regions.- X-Ray Spectra of Solar Active Regions.- X-Ray Spectroscopy of Solar Active Regions During the Third Skylab Mission.- Spatially Resolved X-Ray Spectra of Coronal Active Regions.- Classification of New Spectral Lines of Fe XVII Observed in Solar Active Regions.- Statistical Methods in the Identification and Prediction of the Solar X-Ray Spectral Lines.- Interpretation of the X-Ray Spectra of Solar Active Regions.- Soft X-Radiation from Single Active Regions.- Time Variations in Coronal Active Regions.- Flare-Like Ultraviolet Spectra of Active Regions.- The Structure of Solar Active Regions from EUV and Soft X-Ray Observations.- 3: Solar Flares.- Ultraviolet Emission Line Profiles of Flares and Active Regions.- Fe XXIV Emission in Solar Flares Observed with the NRL/ATM XUV Slitless Spectrograph.- X-Ray and EUV Spectra of Solar Flares and Laboratory Plasmas.- Association of X-Ray Flares with Solar Coronal Active Regions.- Studies of the Dynamic Structure and Spectra of Solar X-Ray Flares.- On the Thermal Structure of the Flare-Produced Plasma.- The Relationship between Hard and Soft X-Ray Bursts Observed by OSO 7.- Relationship between Hard and Soft Solar X-Ray Sources Observed by OSO 7.- Thermal and Nonthermal Interpretations of Flare X-Ray Bursts.- High Time Resolution Analysis of Solar Flares Observed on the ESRO TD-1A Satellite.- Rise Time of Hard X-Ray Bursts.- Determination of the Height of Hard X-Ray Sources in the Solar Atmosphere by Measurement of Photospheric Albedo Photons.- Inference of the Hard X-Ray Source Dimensions in the 1972, August 7, White Light Flare.- The Interpretation of Spectra, Polarization, and Directivity of Solar Hard X-Rays.- Solar Flare X-Ray Measurements and Their Relation to Microwave Bursts.- Relation of Microwave Emission to X-Ray Emission from Solar Flares.- X- and ?-Ray Measurements during the 1972, August 2 and 7 Large Solar Flares.- High Energy Gamma-Ray Radiation above 300 keV Associated with Solar Activity.- Measurements of a Gamma-Ray Burst above 1 MeV.- Gamma-Ray Lines from Solar Flares.- Fast Electrons in Small Solar Flares.- Nuclei of Heavy Elements from Solar Flares.- Implications of NRL/ATM Solar Flare Observations on Flare Theories.- Nonthermal Processes in Large Solar Flares.- On the Acceleration Processes in Solar Flares.